Typewriting machine



mm 5, W23. 1,4519% M. GARBELL I TYPEWRITING MACHINE Filed. Nov. 1, gzo

Patented June 5, I923.

NITE STATESB MAX GARBELL, OF CHICAGO, ILLINOIS, ASSIGNOE TO GABBELL TYPEHRITER CORPO- an'rron, or cnrcaeo, rtninors,

A CQBPGEILTIGN OF DELAVTABE.

TYPEWRITING' MACHINE.

Application filed November To all whom it may concern:

Be it known that I, Mnx GARBELL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Typewriting Machines, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to improvements in typewriting machines, and more particularly to that class of typewriting machines wherein end-wise sliding type bars are employed arranged in a segmental group and radially movable to the common printing point.

As is well understood by those skilled in the art, in typewriting machines of the character mentioned in the preceding paragraph, it is necessary to provide centering guiding means or, as sometimes termed, deflecting means, for the type-carrying ends of the type bars as they approach the printing position. The various type bars, which are all arranged at difierent angles with respect to the usual platen, must be guided or de fiected as they approach the printing position in order that the type faces may be presented to the platen perpendicular there to. I-Ieretofore, so far as I am aware, it has been the universal custom in this class of typewriting machines to provide means on the type bars cooperable with the centering guiding means or deflecting means which means on the type bars have been difierent for each type bar due to the different angles from which the type bars approach the platen. This prior practice has involved relatively heavy expense because of the delicate and difierent machining operations requiredin connection with each of the type bars.

One object of my invention is to provide an exceedingly simple arrangement for deflecting or centering the reciprocating or endwise movable type bars which arrangement may be employed without change on each of the type bars regardless of the position of the type bar in the group.

Another object of the invention is to provide an arrangement of the character indicated in the preceding paragraph by which the construction is both materially simplitied and the cost of manufacture greatly 1, 1920. Serial No. 420,892.

reduced and at the same time a more accurate centering of the type obtained combined with a smoother action of the type bars with lessened friction.

it. specific object of the invention is to provide a novel type block or type head especially adapted for carrying out the preceding objects of the invention.

In the drawing forming a part of this an. enlar ed scale, illustrating the type bar' centering means and the positions of the type bars as the same assume the printing position. Flgure 3 IS an enlarged vertical sectional view corresponding substantially to the line 33 of Figure 2 and showing one of the type bars in printing position. Figure 4 is a detail horizontal sectional View corresponding substantially to the line H of Figure 3. Figure 5 is a side elevation of the improved type block or type bar. Figureb is a detail perspective of thetype block.

In the drawing, 10 denotes a platen of usual cylindrical form, 11 the combined bottom guide and supporting plate for the reciprocating or endwise movable type bars AA. As customary in machines of this type, the type bars A are arranged in the form of a segment and each is movable in a substantially radial line to the printing point designated at 12 in Figure 1. The type bars A may be actuated by any suitable means' as for instance by the type bar action disclosed in my prior Patent 1,305,- 893 and the type bars may be guided by any suitable means.

c To properly center the various type bars as the latter reach the printing position, the, machine is provided with a lower set of converging guiding flanges 1313 which, at their adjacent ends, provide a slot 14 the direction of which is perpendicular to the surface of the platen, shown in Figure 2. Corresponding similarly arranged upper guide flanges 1515 are provided, the same having a slot 16 similar to and alined with the slot 14. The upper guide flanges 15 may be carried by a suitable bridge plate 17 supported by integral bracket arms 18, the latter being secured to any suitable portion of the main frame of the typewriter.

Each oif'theftype barsA is preferably in the form'of' a stamped skeletoirlike plate '20 to the inner end of which is soldered the type block or head designated generally by the reference character, B.

The type block or head B will preferably be of steel an'd'consists of a vertically elongated member slotted on its rear'side as indicated at/21 so as to adapt it to it over and be readily soldered to the plate 20. The

type block B will be of greater vertical "height than the plate 20 and will be extended both below and above the plate 20 asindicated most clearly inFigure 3. On its front or active side, the-block B is cut away so as to provide a depressed verticallyextending face .22 on which the printing characters 123-.-123 are formed as best shown in Figure 6. 'At its upper end the type blockB is formed with an upwardly extended cylindrical'projection or pin 24: of a'diameter corresponding to the slot 16. At its lower end v the type block B is provided with a similar downwardly extending cylindrical projec tion, or pin 25 corresponding in diam'eter to the slot 14. The axes ofthe cylindrical pins 21 and 25 coincide and the common axis cor responds to a line flush with the outer edges :of the type characters 23 and centrally thereof, as will be best seen from an inspection ofFi gure 5. At its lowerend, the type block vl3 is,,'also provided with depending flanges 27 -27 "spaced'rearwardlyor inwardly of the pin 25, having the lower edges thereof flush with the lower'endof the pin 25 so that thev type block will always obtain a support .at the-bottom face though the pin 25 may. have passed slightly beyond the supporting plate 11. lVith this construction it will be '27-27 will not engage the guide flanges,

noted that it' is impossible for the pin 25 to drop downwardly and catch and thereby lock or jam the machine, and the flanges In carrying out my inventiomthe type blocks B will first be embossed with the de:

sired type with the face 22 arranged at the proper angle corresponding tothe position i of the type bar to which the block is to be applied. The type block will next preferably be turned so to produce the cylindrif cal ends or'pins 24 and 25 whichis obviously a a simple operation and independent of the -,;particular. angle of the face-22 of the block.

-The-type blocks will then preferably be slotted to define the groove 21 when they are then ready tobe applied to the type bars.

With the construction described, it is evident Q'that, regardless of the angle friomwhichthe :'type bar approaches the ."platen, 'as illustwoextre'me dotted type bars in Figure '2, the pins 24 and 25 will always pass into the guiding or centering slots let and 16 and positively insure the type striking the platen in a. direction perpendicular thereto. Furthermore, the type will always positively be centered with respectto the guiding slots let and 16 since the cylindrical pins are made of a diameter to correspond with the width of said slots, and ,wobbling or lateral play of the type blockatthe printing position is eliminated. Furthermore, by

cm 310 ing the c lindrical uide oins 24: and 25, I minimize the fr ction and el minate danger of sticking which has been a-serious defect in typewriters of this general class, heretofore. I l v j p From the preceding description, considered in connection with the drawing,itwill be seen that the type blocks may be manufactured in quantities inasmuch asthe same are duplicates for all type bars in so far as the formation of the cente'ringfpins is concerned, and the cost isthereby reduced to a minimum. I

I have herein shown I now consider the preferredmanner: of carrying out the invention but the same; is

merely illustrative and Icontemplate all changes and modifications that come within the sco-peof thecla-ims appended heretoi- I claim:

and de scribe-d. what I. 1. Ina typewriting'machine, the combination with a platen and an endwise movable type bar; of'type bar centering-guiding means adjacent the platen; and a typeblock.

mounted on the type bar, said block having cylindrical pin-like projections cooperable with said means, theaxes of said pinlike projectionscoinciding with a line'flush with the edges-of the. printing characters on the. type block. l

2. In a typewriting machine, the 'combination with aplaten; of type bar centering guidingjmeans adjacent the platen at the printing position, said means including up per and lower setsof converging guiding walls and slots perpendicular to the platen;

and an endwisemovable type bar'havinga type block at; its inner end, said block being provided with upwardly and downw'ardly,.

porting and bottom guideplate; of an endwise movable type bar provided at its inner end with upper and lower pin-likeextensions cooperable with said means, said type barbeing providedalso with a downwardly extendedflangespacedinwardly ofth'e lower of said pinlikeprojectionsby"which the' type bar is adapted to be supported in the event said lower pin-1ike extension passes beyond the plate.

4:. As an article of manufacture, a type block for typewriters, said block being slotted lengthwise on one side thereof and provided with integral printing characters on the opposite side, said block being formed at the top and bottom thereof with upwardly and downwardly extending pin-like projections out of alinement with the slot.

at its ends, said projections being alined 10 with the printing characters of the block. MAX GARBELL.

Witnesses:

CARL H. BRUCKER, FLOYD E. MINER. 

